The cutting edge Seven Viking vessel, designed to support Statoil’s harsh-environment operations in the North Sea and Norwegian Continental Shelf is being unveiled and named by Subsea 7, Eidesvik Offshore and Ulstein at a ceremony in Stavanger, Norway today.
This next generation Subsea Inspection, Maintenance and Repair (IMR) vessel is co-owned by Subsea 7 and Eidesvik and has been constructed in partnership with Ulstein.
The ICE-C class vessel with a crew capacity of 90 and a top speed of 17 knots, will work for Statoil on a five year contract. It has been custom-built according to the operator’s specifications to carry out tasks including inspection, maintenance and repair of subsea installations in addition to scale treatment and RFO work scopes (Ready For Operations).
The Seven Viking incorporates the X-BOW® hull line design to reduce motion in transit and gives increased stability in the harsh environment of the North Sea. Despite this enviable stability usually associated with size, this version of the Ulstein SX148 design has been crafted to be compact in stature – measuring only 106.5 metres long and 24.5 metres wide. The dimensions will allow the Seven Viking to manoeuvre with ease in confined spaces, such as between platforms, accessing difficult to reach areas.
Thanks to a clever configuration whereby hull space is maximised and equipment is integrated within a large hangar area, the Seven Viking and its crew have the ability to carry all necessary maintenance equipment on board, ensuring that operational downtime is kept to a minimum.
Subsea 7’s Vice President for Norway, Stuart Fitzgerald commented: “The Seven Viking represents another class-leading asset in the Subsea 7 fleet and captures Subsea 7’s unparalleled experience with IMR operations in harsh environments. The design and build of this state of the art vessel would not have been possible without the expertise and dedication of many people within both Subsea 7 and our project partners, and we take pride in their achievement. We look forward to many years of safe and efficient operations with Seven Viking for our customer, Statoil.”
Jan Fredrik Meling, CEO Eidesvik Offshore said, “We in Eidesvik are very satisfied with the close and constructive cooperation with Subsea 7. The relationship between our companies has developed over many years and has enabled us, together with Ulstein, to launch this outstanding vessel.”
Safety, efficiency and environmental considerations have been the prime focus for the three partners when developing the Seven Viking, which carries the Clean Design notation.
A customised module handling system (MHS) has been integrated in the ship’s hangar for the safe launch and retrieval of subsea modules weighing up to 70 tons through the moon pool.
To facilitate cooperation and communication, all operational personnel are gathered in one area adjacent to the hangar, with panoramic windows in the control room giving a full overview of this key activity area. The Seven Viking has been developed to meet the highest working environment standards, and is classified as a comfort class COMF-V (3) vessel. Minimal noise levels in the hangar have been achieved by opting for electric winches for the ROVs, the MHS and other utility equipment.
Notable environmental initiatives include diesel electric propulsion, which reduces atmospheric emissions, and the electrical winches which nullify the risk of emissions of hydraulic oil.
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February 19, 2021
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